Wagon drill



J. C. CURTIS June 23, 1936.

WAGON DRILL Filed March 15, 1933 3 Sheets-Sheet 1 r/0HN c. cu/e 775 INVENTOR 0 Z Y Q 7. 3

ATTORNEY June 23, 1936.

J. c, CURTIS WAGON DRILL Filed March 15, 1933 3 Sheets-Sheet 2 Jab N C. CUR 77.5

INVENTOR ATTORNEY June 23, 1936. J. c. cuRTls 2,044,876

WAGON DRILL Filed March 15, 1933 3 Sheets-Sheet 5 l 1 JOHN 6. 012775 INVENTOR BY ATTORNEY indicated by line in Fig. 1.

Patented June 23, 1936 UNITED STATES WAGON DRILL John 0. Curtis, Garfield Heights, Ohio; assignor to The Cleveland Rock Drill Company, Cleve-- land, Ohio, a corporation of Ohio Application March 1933, Serial No. 660,884

This invention relates broadly to rock drills, but moreparticularly to wagon drill of the drifter type.

Heretofore rock drills of this type were manufactured to comprise a vertical frame upon which the rock drill was slidably mounted. This frame vwas usually integrally mounted on a horizontal frame equipped with wheels for facilitating the moving of the assembly. To the vertical frame was aflixed either a hand operated or fluid operated hoist, by which the rock drilling motor could be elevated on the frame to permit the removal of the drill steel from the drilled hole. During the drilling operation, the hoist was simply released to permit the downward travel of the rock drill, the feeding power of the latter being directly proportional to its weight. While drilling in rock of different density, difficulties were often encountered since no means were provided to retard or increase the feed of the machine according to the density of the rock being drilled. The vertical frame being integrally secured to the horizontal frame eliminated the possibility of drilling holes other than vertical, thus greatly reducing the application of such a machine.

One object ofthis invention is to produce a readily movable carriage for rock drill wherein the member upon which the rock drill is slidably' mounted may be swung and secured into any de sired position.

Another object of this invention is to produce a carriage for rock drill wherein the frame upon which the rock drill is slidably mounted, may be moved in such a manner as to permit the drilling of a plurality of parallel holes without necessitating the displacement of the carriage.

Another object of this invention is to produce a rock drill mounted on a wagon like supporting frame equipped with means for rigidly securing the same to the ground.

Another object of this invention is to produce a mounting for rock drill having all the characteristics of a wagon drill, but equipped with a mechanism capable to feed the rock drill toward and away from the work.

In the drawings which illustrate a embodiment of the invention: a

Fig. 1 is a plan view of the carriage assembly, illustrating the rock drill and its feeding mechanism located in a vertical position.

Fig. 2 is a cross sectional view taken in a plane indicated by 1ine 22 in "Fig. 1, with the rock drill located in the horizontal position.

Fig. 3 is a cross sectional view taken in 'a plane preferred Fig. 4 is an enlarged sectional view of the feeding mechanism shown in Fig. 3.

Fig. 5 is an enlarged view illustrating the clamping device of the feeding mechanism on the supporting frame. a

Fig. 6 is a cross sectional view taken in a plane indicated by line 6-,6 in Fig. 5.

Fig. 7 is a view illustrating the feeding mechanism together with the system of conduits pertaining thereto. 10

Fig. 8 is an enlarged sectional view of the throttle valve and pressme regulating valve illustrated in Fig. 7.

Fig. 9 is an enlarged cross sectional view taken in a plane indicated by line 9-9 in Fig. 7.

Referring to the drawings in which like charactersdesignate corresponding parts throughout the several views, l0 represents the two side channel bars of a frame which are, toward the right end thereof, united by a cross member or handle ll. Welded on each of the channel bars lit, at a selected distance from the left end therep of, there is a'transversally disposed bracket [2,

being formed with an enlarged circular flange l3, disposed in the interior of thechannel bars. Extending from the center of the internal vertical face of each of the flanges I3, there is a stem [4 formed of difierential diameters, the outer end portion thereof being threaded to receive a nut IS. The brackets I 2 are also each provided with a shaft I 6 extending to the exterior of the members l0, and capable of receiving a wheel IT.

The wheel may be secured thereon by any suitable means, as for instance by means of a pin l8, which is simply inserted into a vertical aper ture disposed within the end portion of the shaft, The internal vertical face of the flange I3 is formed with a circular T-shaped groove l9, having slidably mounted therein the'heads of two bolts 28; These bolts and heads may be introduced into the groove I! through an aperture 2| leading from the opposite vertical wall of the flange into the groove. Located between the two side members Hi, there is a substantially U- shaped tool supporting frame or yoke 22, comprising a tubular member 23 having welded thereto at each end thereof an arm 24. These arms are each formed with three transversally disreceive the bolts 2! which protrude from the groove IS. The bolts 20 are of suflicient length 'to receive the nuts 25, by which the yoke-22 may be locked into any desired position. Oneach side of the bracket l2, at selected distances therefrom, in the channel bars H) are formed apertures 25. Disposed adjacent to these apertures, on the inner face of bars III are U- shaped plates, having the side walls threof "engaging the flanges of the channel bars I0.

7 located closer to the wheels than the pins mount- These plates are provided with apertures similar to the apertures 26, capable of receiving holders 28 whichprojectinteriorly of the frame. One

end of each of these holders is formed with an enlarged head 29 abutting the plate 21. Formed through each of the holders 28, there is an B10111 gated aperture 30 adapted to receive a frame supporting pin 3l. The elongated aperture 30 is located in such a manner as to permit the engagement of the pin 3| with the base of the channel bars Ill. Each of the holders 23 is properly machined to receive a set screw 32 capable -of engagement withthe pin 3! for locking the .latter in any desired position in the holder 28. 'It will be observed thatby loosening the screws "32, the pins 3 l are free to side within the elongat-.

ed on the right end portion of the frame. When it is desired'to anchor the frame to the ground,

it is desirable to elevate the wheels therefrom.

This may readily be accomplished by first lower mg the right end of the frame to the ground..

Subsequently the pins mounted on the left end of the channel bars- "I may be lowered and'securedin the. frame in engagement with the ground. power onthe handle II to move the frame into horizontal position. Subsequently the pins ad,

jacent the handle ll" may then be lowered until they touch the ground and secured in such a position in the-frame, thus rigidly securing the frame to' the therefrom.

Mounted on the substantially u shap'ed frame on yoke 22, there is a feed tube 33, having af-' fixed to the exterior thereof two parallel'guides 34, upon which a rock drill 35 is free to slide.

Disposed withinthe feed tube 33, there is a mild actuated-feeding mechanism including a piston 35 and chain 31, throughwhich-slidable movement is transmitted to the 35. Since the construction of this feeding mechanism isidentical to the construction described in my United States Patent No. 2,029,223, no further description of the same is thought necessary.

Secured to the lower end of the feed tube 33, there is a front head 38, formed with a cylindrical portion 39 capable of engagement within 7 the feed tube 33. The portion ofjthefront head 38 protruding from the feed tube is elongated to extend laterally past the marginal edge of the feed tube, and has formed on the end face thereof a semi-circular groove 40 of a diameter equal to the diameter of the yoke tubular member 23, and adapted to engage the latter. Disposed on the fourcorners of the front head, there are provided apertured lugs 4| adapted to receive the bolts 32. Corresponding to the forward shape of the front head 38, there is acap'43 formed with a groove 44' similar to the groove 40. This cap is also formed with apertured lugs 45 through The operator may then apply lifting,

ground, with the wheels elevated.

which'the bolts 42 are free to pass to -receive the.

nuts 46. Thus the feed tube assembly may be secured to the tubular member 23 of the yoke 22 by tightening the nuts 45'. By loosening the nuts 46, the boom 33 may be swung into any desired position. 1

Securedto the upper end of the feed tube 33, there ,is a backhead 41 which is a replica of the front head 38. These two heads are secured to the feed tube by a pair of bolts 48 extending from one head ,to the other.

Afiixed to one side of the feed tube 33, there is a motive fluid conveying conduit or pipe 49, equipped with a throttle valve 50, which is located at a convenient distance from the ground. The'pipe 49 is connected'to the rock drill 35 by Adjacent the pipe 49,-there is another pressure fluid conveying conduit 52, constantly admitting motive fluid into a throttle valve housing 53. In this housing is slidably mounted a throttle valve and from the feed tube 33, through inlet conduits' 56 and 51, and outlet conduits 58 and 59. From the inlet 'conduit 51, the motive fluid is forced to flow through a. pressure regulating valve -tion is thought necessary.

Referring now to the carriage construction. together withthe means by which the feed tube ing the 'nuts 46. Simultaneously the feed tube 33 maybe moved laterally on the tubular member 23, thus itmay be rotated in a plurality of parallel planes. When it is required todrill a series of vertical holes in parallelism with the yoke tubular member 23, the tube 33 may be positioned vertically on that member ata place adjacent to one of the arms 24. After. the drilling of each hole, the tube 33 may be shifted'laterally on the member 23, thus permitting the drilling of a plurality of holes on a line parallel to the member 23, without necessitating the constant displacement of the carriage. .When it is desired to drill a plurality of horizontal holes on a vertical plane,

the yoke 22 may first be lowered to the ground withthe tube 33 secured horizontally thereon. After the drilling of each hole, the yoke 22 maybe rotatedupwardly by loosening the nuts 25jand '54 operable byahandle for controlling the admission and exhaust of the motive fluid into is aflixed to the yoke 22, it has been previously 35 explained that the feed tube 33 may be rotated in a substantially vertical plane by simply loosenthe position of the tube 33 thereon corrected to a horizontal position, thus permitting the drilling fof a pluralityof horizontal holes in'a vertical tube 33 vertically thereon-(Fig. 7). The offset of the yoke 22 is such that the tube 33 may be located to permit the position of the rock drill inv the immediate vicinity of the verticalwall without any interference channel bars [0.

Whenit is desired to drill upwardly in a sub- .stantial vertical direction, the tube 33 may-be -turned aroundto secure the engagement of the back head 41 with the yoke 22. Since the back 75 away from the handle I I, and positioning the (35 from the left end of the pletely set forth the invention, it is to be under-- stood that the specific terminology is not intended to be restrictive or confining and it is to be further understood that various rearrangements of parts and modification of structural detail may be resorted to without departing from the scope or spirit of the invention as herein claimed.

I claim:

1; In a rock drill mounting, a supporting frame,

a drill guiding frame having a drill slidably mounted thereon, each end portion of said drill guiding frame being the replica of the other end portion thereof, a substantially U-shaped memher pivotally connected to said frames, and means including one of said end portions for establishing arigid connection between said frames.

2. A rock drill mounting having a supporting frame, a. substantially U-shaped member pivotally connected to said frame, a drill guiding frame, the end portions of said drill guiding frame being replicas of each other, a drill slidably mounted on said drill guiding frame, means including one of the end portions of said, drill guiding frame for pivotally mounting said drill guiding frame on said U-shaped. member, andmeans for locking the' parts in their adjusted position to form a rigid connection between the drill guiding frame and the supporting frame.

3. In a portable drilling rig, the combination, of a carrying frame comprising a single unit, bearings carried by said frame, a substantially iJ-shaped tool supporting frame pivotally connected by said hearings to said carrying frame, and means forming a part of said bearings for holding said tool supporting frame in adjusted position.

a. In a portable drilling rig, the combination,

of a carrying frame comprising a single unit,

bearings carried by said frame, a substantially U-shaped tool supporting frame pivotally connected by said hearings to said carrying frame, and means forming a part of said bearings for holding said tool supportingframe in adjusted positions, said bearings and frame constructed and arranged whereby said tool supporting frame may be adjusted to position a tool carried thereby at various angles with respect to the horizontal and above or below said carrying frame.

5. In a portable drilling rig, the combination, of a carrying frame, supporting wheels carried by said frame, a. substantially U-shaped tool supporting frame, means pivotally connecting said tool supporting frame tosaid carrying frame, said pivotally connecting means including means for holding said tool supporting frame in adjusted positions.

6. Ina portable drilling rig, the combination,

, of a flat open ended carrying frame, supporting means for said frame, a U-shaped tool supporting I frame having its ends pivotally connected to the carrying frame, the portion of the carrying frame between the pivotal axis of the supporting frame and one end being unobstructed to allow the substantially U-shaped frame to swing across the plane of the carrying frame, and means for locking the frames against relative movement.

"7. In a portable drilling rig, the combination of v a carrying frame having an open center, supporting means for said frame, a tool supporting frame pivotally connected to said carrying frame, a rock drilling mechanism supported by said supporting frame on an axis parallel to the pivotal axis of said supporting frame, one end of said drilling mechanism being capable of movement through the open center of the carrying frame, said drill ing mechanism being adjustable longitudinally of said carrying frame bythe pivotal movement of the supporting frame, and means for locking the two frames against relative movement.

8. In a portable drilling rig, the combination, of a flat open center carrying'frame, supporting means for-said frame, a substantially U-shaped tool supporting frame pivotally carried by said 20 can'ying frame, means for locking said frames against relative movement, and a. rock drilling mechanism supported by the portion of said U- shaped supporting frame which is parallel to its pivotal axis whereby one end of the drilling mechanism is adjustable longitudinally and within the open portion of the carrying frame by the pivotal movement of said supporting frame.

9. In a portable drilling rig, a carrying frame having an open center portion, supporting means for said frame, a U-shaped tool supporting frame having its legs pivotally connected to the carrying frame, the space between the pivotal connections being unobstructed, said supporting frame being capable of adjustment from a horizontal position through a vertical position, and means to lock the frames against relative movement.

10. In a portable drilling rig, the combination, of a U-shaped carrying frame, supporting means for said carrying frame, a U-shaped tool supporting frame having its'ends pivotally connected to the carrying frame, the portion of the carry ing frame between the pivotal axis of the supporting frame and its open end being unobstructed to allow the U-shaped supporting frame to swing across the plane of the carrying frame, and means for locking the frames against relative movement. 7

11. In a portable drilling rig, the combination of a carrying frame-including two side members, supporting wheels for said frame, means including a stationary element on each of said-side members for rotatably mounting said wheels on said carrying frame, a substantially U-shaped frame, means pivotally connecting said tool sup- 6 portingframe to said carrying frame, the pivotal axis of said supporting frame being coaxial with the rotatable axis of thewheels, said, pivotally connecting means including means for holding said tool supporting frame in adjusted position.

,13. In a, portable drilling rig, the combination of a carrying frame, supporting wheels carried by said frame, a substantially U-shaped tool supporting frame, means pivotally connecting said tool supporting frame to said carrying frame, and 75 meansdisposed on an axis parallel tothepivotal axis of said supporting frame for holdingsaida supporting frame in adjusted position.

14. In a portable drilling rig, the combination of a carrying frame, supporting wheels for said frame, anchoring means adjustably carriedby said frame ahead of said wheels, a substantially U-shaped tool supporting frame, means pivotally connecting the legs of said supporting frame to the carrying frame, said pivotally connecting means ineludingmeanslocated between the legs for holding said supporting frame in adjusted position;

' 15. ha portable drilling rig, the combination of a carryingframe including two side members united by a cross member, saidoross member constituting a. handle for said frame, supporting means for said frame, a leg adjustably carried by each. of said side members, bearings carried by said frame, a substantially U-shaped tool supportingframe pivotally connected by said bearings to said carrying frame, and means for locking the frames against relative movement.

' 16. In a portable drilling-rig, the combination of a fiat open ended carryingframe, supporting and one endbeing unobstructed to allow the 1260] carryingframe, and means carried by the legs forrotation therewith for locking the frames against relative movement.

17.. In a portable drilling rig,the combination :01 a' flatflope'n ended carrying frame, supporting means for said frame, a substantially U-shaped tool supporting frame having its ends pivotally connected to the carrying frame, a drilling mechanism pivotally carried by said tool supporting frame, the portion of said carrying frame between the pivotal axis of the supporting frame and one end being unobstructed, said drilling mechanism being adjustable longitudinally: of said carrying frame with one end of the former being swingable throughthe unobstructed portion of said carrying frame due to the pivotal movement of said U- shaped supporting frame, and means forlocking said frames against relative movement.

18. In a portable drilling rig, the combination of a carrying frame formed with an unobstructed open portion, supporting means for said frame, a tool guiding frame carried by said-carrying.

frame, a connecting member between said frames pivotally connected to said frames, said tool guiding' frame bein'g adjustable longitudinally of said carrying framejwith one'end of the former'being allowed to swing through the unobstructed open portion of the latter due to the pivotal movement of said connecting membena'nd means for locking said frames against relative movement.

norm 0. CURTIS. 

